Accession Number : AD0658877

Title :   OBSERVATIONS OF PARTICLE MOTIONS IN OCEAN WAVES. VOLUME II. APPENDICES.

Descriptive Note : Technical memo.,

Corporate Author : NAVAL UNDERWATER WEAPONS RESEARCH AND ENGINEERING STATION NEWPORT R I

Personal Author(s) : Shonting,D. H.

Report Date : JUL 1967

Pagination or Media Count : 205

Abstract : Ducted impeller wave meters were suspended from the Buzzards Bay Entrance Light Station to measure particle motions in wind waves at various depths beneath the free surface. The motions recorded display quasisinusoidal oscillations having an approximate 90 degrees phase shift between the horizontal and vertical velocity components that lie normal to the wave crests. The wave kinetic energy associated with the variances in the wave motions shows a strong depth attenuation, but this attenuation is not as great as the exponential energy decrease exhibited by a classical trochoidal wave. Integrals of the wave kinetic energy contained in the water column were approximately equal to the estimated potential energy of the waves. (Author)

Descriptors :   (*OCEAN WAVES, MOTION), PARTICLES, KINETIC ENERGY, ATTENUATION, WIND, EQUATIONS OF MOTION, VELOCITY, MEASUREMENT, TIDES, COMPUTER PROGRAMS, OCEANOGRAPHY

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE